Treatment of common closed valve stem nut by processing method

The valve in the closed state, processing method of stem nut killed. Can be eliminated by the following methods.
A. strong injection lubricant scuffing elimination. Remove the hand wheel, use kerosene to clean the valve stem nut and the sliding surface of the sliding surface rust. Each with a kerosene to around gently turning handwheel (because the valve closed is not necessarily the bottom dead center), repeated addition of kerosene, beating bracket until the sliding surface rust clean so far. Then in the oil and less Xu graphite coated thread and the sliding surface between, the hand wheel rotation around a few, feel relaxed as well. If you do not gather together effect, can be in sliding support surface lateral drilling, tapping, mounted on the injection mouth, will the oil and graphite lubricant was forced to inject between sliding surfaces by injection gun, few hand wheel, can eliminate the seizure phenomenon. Such a strong note of lubricant method, is also applicable to other stem nut bite phenomenon.
B. remove the stem nut to eliminate the phenomenon of death. Stuck with a special clamp valve stem, the top of the bottom of the bracket in the bottom, can not contact with the valve stem nut. Remove the hand wheel, first use kerosene to clean the valve stem, stem nut and the holder of the contact, and add lubricant. Under normal circumstances, the hand wheel and the hand wheel clamp nut are opposite to each other. Making a handle, handle the internal thread and the compression nut, the handle anti clockwise rotation in the stem nut, counter clockwise direction pulled the stem nut, the to the stem below rotation. From the stent. Then fix the bracket and the valve stem nut sliding surface, add lubricant, assemble and recover, and remove the clip.
C. to corrosion is serious, it is difficult to remove the nut, can also use hydraulic nut damage is destroyed, thus eliminating the seizure phenomenon.